Bent three-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>α</mml:mi></mml:mrow></mml:math>linear-chain structure of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">C</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>13</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>

Furutachi, Naoya; Kimura, Masaaki

doi:10.1103/physrevc.83.021303

Cited by 49 publications

(70 citation statements)

References 14 publications

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“…Therefore, it is very important and interesting to investigate the linear-chain state in 16 C without an a priori assumption on the cluster core and valence neutron orbits. Furthermore, in addition to the linear-chain configuration, triangular configurations of 3α particles are also suggested in the neighboring nuclei such as 13 C and 14 C [26][27][28][29]. Therefore, it is also interesting to search for an analogous state in 16 C. For this purpose, we discuss 3α cluster states in 16 C based on AMD, which has been successfully applied to the studies of the clustering in unstable nuclei [17,18,[30][31][32].…”

Section: Introductionmentioning

confidence: 99%

“…Naturally, we expect that the linear-chain configurations of 3α clusters can be stabilized by the assistance of valence neutrons in neutron-rich C isotopes. Indeed, there are a number of studies to theoretically predict and experimentally search for the linear-chain states in neutron-rich carbon isotopes [19][20][21][22][23][24][25][26][27]. Among C isotopes, 16 C is a very interesting and important nucleus as the most promising candidate of the stable linear-chain state, because its stability against the bending motion was pointed out by molecular-orbital model calculation [19].…”

Section: Introductionmentioning

confidence: 99%

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3αclustering in excited states ofC16

2014

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The α-cluster states of 16 C are investigated by using antisymmetrized molecular dynamics. It is shown that two different types of α-cluster states exist: triangular and linear-chain states. The former has an approximate isosceles triangular configuration of α particles surrounded by four valence neutrons occupying the sd shell, while the latter has the linearly aligned α particles with (sd) 2 (pf ) 2 neutrons. It is found that the structure of the linear-chain state is qualitatively understood in terms of the 3/2 − π and 1/2 − σ molecular orbits as predicted by molecular-orbital model, but there exists a non-negligible 10 Be + α + 2n correlation. The bandhead energies of the triangular and linear-chain rotational bands are 8.0 and 15.5 MeV, and the latter is close to the 4 He + 12 Be and 6 He + 10 Be threshold energies. It is also shown that the linear-chain state becomes the yrast state at J π = 10 + with E x = 27.8 MeV owing to its very large moment of inertia comparable with hyperdeformation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

3αclustering in excited states ofC16

2014

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“…Theoretical studies predict the rotational bands with the linear-chain configurations in C isotopes [12][13][14][15][16][17][18][19][20][21][22]. It was pointed out that the motion of the valence neutron can be qualitatively interpreted in terms of the molecular orbits analogous to the Be isotopes [23][24][25][26][27][28][29], which are called π and σ orbits.…”

Section: Introductionmentioning

confidence: 99%

Three-body decay of linear-chain states in C14

Baba

Kimura

2017

Phys. Rev. C

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The decay properties of the linear-chain states in 14 C are investigated by using antisymmetrized molecular dynamics. The calculation predicts two rotational bands with linear-chain configurations having the π -bond and σ -bond valence neutrons. For the π -bond linear-chain, the calculated excitation energies and the widths of α-decay to the ground state of 10 Be reasonably agree with the experimental candidates observed by the α + 10 Be resonant scattering. On the other hand, the σ -bond linear-chain is the candidate of the higher-lying resonant states reported by the breakup reaction. As the evidence of the σ -bond linear chain, we discuss its decay pattern. It is found that the σ -bond linear chain not only decays to the excited band of 10 Be but also decays to the three-body channel of 6 He + α + α, and the branching ratio of these decays are comparable. Hence, we suggest that this characteristic decay pattern is a strong signature of the linear-chain formation and a key observable to distinguish two different linear chains.

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“…The presence of rotational bands built on molecular states has been suggested in several papers [11][12][13]. Furthermore, in recent times, some theoretical works [12,14] predicted the possible existence of states corresponding to the coupling of valence neutrons to the 12 C Hoyle state.…”

Section: Introductionmentioning

confidence: 99%

The role of ¹³C excited states in α+⁹Be reaction and scattering cross sections

2017

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Abstract. The spectroscopy of 13 C excited states above the alpha emission threshold has been investigated by studying data on 9 Be(α,α) 9 Be and 9 Be(α,n) 12 C collisions at bombarding energies in the range E α ≈2-10 MeV. A multichannel R-matrix fit allowed us to better constrain the spectroscopy of 13 C states above the α threshold (10.65 MeV). Preliminary results on this analysis will be discussed.

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Bent three-αlinear-chain structure ofC13

Cited by 49 publications

References 14 publications

3αclustering in excited states ofC16

3αclustering in excited states ofC16

Three-body decay of linear-chain states in C14

The role of ¹³C excited states in α+⁹Be reaction and scattering cross sections

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Bent three-αlinear-chain structure ofC13

Cited by 49 publications

References 14 publications

3αclustering in excited states ofC16

3αclustering in excited states ofC16

Three-body decay of linear-chain states in C14

The role of 13C excited states in α+9Be reaction and scattering cross sections

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The role of ¹³C excited states in α+⁹Be reaction and scattering cross sections